Is this a good idea?

Ive been talking to a girl for a few months. I haven't met her, but we both want each other. Whatever it is, it's driving me nuts. It's not like she's a stranger either, we have mutual friends and live super close, just things keep on getting in the way. Fast forward a bit, it's now been a year since I started talking to her.. Unfortunately the last time I said anything to her was September 2011, but I still think about her every day. What makes it worse is that she has boyfriend. It is summer again though, and I'm feeling like meeting her is the right thing to do. I don't want to home wreck , it's the last thing I'd mean to happen, but I know the second we see each other things would go perfect. So I ask you reddit, should I go after this amazing girl? Or just leave it ?